You may be at an increased risk of primary hyperparathyroidism if you:

  • Are a woman who has gone through menopause
  • Have had prolonged, severe calcium or vitamin D deficiency
  • Have a rare, inherited disorder, such as multiple endocrine neoplasia, type I, which usually affects multiple glands
  • Have had radiation treatment for cancer that has exposed your neck to radiation
  • Have taken lithium, a drug most often used to treat bipolar disorder
May. 13, 2011